A nine-year-old tested professional touch therapists. Using a cardboard partition, she held a hand above one of the therapist's hands, and the therapist was asked to identify the hand that was chosen. What type of study is this? What are the variables of interest?

In Observatory study, researchers observe or measure characteristics of the subjects, but do not attempt to influence or modify these characteristics. As in this case, the study type clearly points at observational study as the aim is only to bxerve the therapist with no attempt to influence the outcome.

A​ nine-year-old tested professional touch therapists. Using a cardboard​ partition, she held a hand above one of the​ therapist's hands, and the therapist was asked to identify the hand that was chosen. What type of study is​ this? What are the variables of​ interest?

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A nine-year-old tested professional touch therapists. Using a cardboard partition, she held a hand above one of the therapist's hands, and the therapist was asked to identify the hand that was chosen. What type of study is this? What are the variables of interest?